Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

117 questions · 120 findings · 21 reviews · Headline outcomes only

No studies found 29 · 24.2%GRADE not reported 5 · 4.2%Very low 44 · 36.7%Low 30 · 25%Moderate 7 · 5.8%High 5 · 4.2%